Question

9. Find the area of the shaded region:
steps by step explanation
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Answer 1

Answer:

area = πr^2

raidus = 7 cm

= 22/7× (7) ^2

22/7× 49

22× 7

154cm2

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Answer 2

Step-by-step explanation:

given: radius of bigger circle = 10.5 cm, radius of the smaller circle = 3.5 cm

area of shaded portion =

area of bigger circle - area of smaller circle

=> π × 10.5² - π × 3.5²

=> π ( 110.25 - 12.25)

=> 22/7 × 98

=> 308 cm²

Answer